Control structure for plows



Sept. 22, 1931. J. H. DAVIS CONTROL STRUCTURE FOR FLOWS 2 Sheets-Sheet 1 Filed June lO, 1929 INVENToR doa 1 www1@ uw;

ATTORNEY Sept. 22, 1931. J. H. DAvls 1,823,969

CONTROL STRUCTURE FOR FLOWS Filed June l0. 1929 2 Sheets-Sheet 2 INVENTOR @701212 H Davi E @Mgmm ATTORN EY Patented Sept. 22, 1931 ffr, JOHN n. DAVIS, orsrocx'roiv.` CALIFORNIA OFFICE conmnonsrnucfrnnnron PL'ows Applica/:maaien JifiefIaQIszgl serial 110,369,578.

particularly to a heavy duty plow of the type shown in my lprevious Patent'No. 1,358,929, dated November 16, 1920; over which the presment construction is an improvein'ent.- I,

The present invention deals v.principally with the drawbar arrangement and with' the mounting of the wheels which s'upportthe plow frame. My principal object is to pro# p3vide adraw bar construction so connected to 10 the frame that a downward Vpull will be".` exerted on the same adjacent itsrearend,r tending to maintainthe plo'ws'properly enf gaged with the ground. and also so arranged- F that a lateral tilting of the end supporting wheels to hold the .plow inthe line'of draft s is not necessary. f

A further object 1s to provide a wheel si1`p-`v porting the frame on the side thereof oppo- Cq" site the plows, having adjustment ,mea-ns zoxadapted.. to be readily manipulated to verti cally adjust said wheel relative to the frame',

so that the latter may be tilted-laterally and the plows forced deeper into the ground when a: operating conditions make this' temporarily "D advisable.

The wheel also y has supportingvconnections with the frame arranged to enable the langle offsetting of the wheelrelative' tothe plane of movement of the plow to beialte'redjtherel` 30 by vrelieving or lessening the lateral'strainor.;

load on the plows when necessaryfunder cier-` tainconditionsg' 1 .j f A further Vobj ect ofthe invention is to producea simple and inexpensive device an'djyety 5 one which will be exceedingly effective for the purpose for which it is designed.

` These objects I` accomplish by meansofA such structure and relative arrangement of parts as will fully appear b a perusal ofthe Y verrenablest'he same to be held Iat any posifollowing specica-tion an claims.

In the drawings similar characters of Vreference indicate corresponding several viewsi `f i j .4,

, Y Fig. l is a perspective ,view .of one side of 45 theplow.

Fig. 2 isa perspective View taken from the forward end. y

Fig. 3 isa fragmentary top the specific mounting ofthe adjustablefside wheel. I

This invention relates to gang plows and [parts *in i the seen that the wheel may be easily raised or .0f .the rlvf :plan showing` the wheels Ltand 6 without adjusting the Referring now more particularly to the characters ofreterence on the drawings, the frame of the plow comprises a main beam 1,` a side'y beam 2 connected to the beam 1 at its y rear :end and `diverging thence forwardly;

and'bra'ced cross members 3 connecting said 55...

beams at intervals.` The rear endv of the frame is supported by a single wheelfl which isvertically adjustable Vby means vof a lever controlled structure 54 as shown in the above mentioned patent. At theAV forward end of the main beamoutwardly of the same is another wheel`6 `which is supported from avertical spindle 7 whichisturnable in a` sleeve 8 supported from the beam 1. This spindle is'verticallyadjustable without interfering with its turning by a lever controlled structure 9 also the sameas in, saidprevious patent. A pluralityo` plowin'gelements 1() issupported byV 1the main' beam l outwardly of the same andarrangedin a row extending lengthwise of lthe frame. :f v

"Y'Journaled in transversely spaced bearings lljmountedon the frame in a particular manner'a's later described is a substantial rigid shaft 12on the end of which opposite the plowingfelements is a downwardly'and forwardly dependingarm 13. On the lower end of this arm, a wheel 14; is mountedjwhich extends substantially parallel to the beam 2 and 'isdisposedabout half wayjbetween the wheels and 6. Aflever lprojects upwardly alongside uthe beam 2 and rearwardly ofthe wheel-14 andis` connected at its lower end" to a link 16 which is pivoted on said beam. In# termediate its ends this lever is adjustably cpnnected to another link 17 which at its lower end is connected to the lower end of the arm A pawl and ratchet mechanism j of common character associated with the letion. 1 j l #By vmeansiof this'arrangement it will be lowered relative to the frame at will, result-k ing of eou'rse'in raising or lowering the correspon-ding ,side of the frame and laterallyV tilting` the frame asa whole. This tends to Cause all-the plo'ws to be also tilted so that they depend to dierent extents relative to -the franieiand to exert a downward pressure gif latter and is a valuable feature under those conditions when a temporary altering of the depth of the plow elements is necessary or advisable. The three point suspension of the frame not only simplifies the construction but enables the.Y one side wheel opposite to.. the plows' toabe relieda'on for temporary plowf depth adjustment purposes, without Yhavingv to individually adjust the wheels 4 or 6,"th-e adjustment of thev latter beingiisedfonlywvhenn initially setting the plows to `a certain constant depth. Y e Y The bearing boxes 11 are supported at the`V ends of a plate 19 which'extends` across and is secured: to :the zfbearns. and A2 toward: fthe rear. end thereof, said .boxes being-, securedrbyy bolts ,-20 passed .through slots 121 int-the plate@ l9-whieh extend longitudinally ofthepluw. Thisarrangelnent' of the-.boxes andazconse-a quently-of the shaft causes .the -lattertofbrace e onnthe `framefor the. full: transverse: .area thereof .where-most needed; and 'alseenahles l the vsaid shaft toexert -an eventi-ltingfgactioin onltheframe .when the -wheel is beinggradjusted.

vertically, without tendingtoethenitwist ftheri frainee. The box nearestthe arm-13fhas Flon-e, gitudinat adj listing-screws 22 mountedin'conn nection therewith at the oppositeends ,thereofv wardly from .the plate 19m f Therefore ifthe iboltsarexloosened andgthee screws adjustedone-,wayt or .the other, thee angleY of the shaft Y12 relative sto ,the frame tand consequentlyythe angle .of ,-setting-offthe L customary in agricultural-,1 implements so..

that 'suchQshiftingO-vf positioneof the shaft'and f arm: will `notinterfere with-.thef-vertical .iadb` justmentrnechanism-.

, Disposedv t'betw'een ,the fbeams. :1andv2 ust:A

ahead. -oflthe Yplate f19 and.P substantially #in transverse: alinement rwith the second plow; l ingielement. fromY the f rear is `a-draw .liead- ,24 ,i which :is lsecured to cone oftthe --cross abats 3y whichat the 'draw head is ebent rearwardly to.j

extend 'to ,the :beam l @parallel toithebeam..2.

This draw xheadis secured-gto t'his extended portion of the brace baranda also to anangggled*l bar 25'engagingthe oppositeside of'thefdraxv head1 andiconnected tothe beamy l as showninfv.

fFig." rgoThis-Inakes :a: rigid Aconnection so.-

that the strain of the draw `head will be dis;-A

' tributed overfa-considerabl'e portionfofrzthe 27 and engages the draw bar to prevent the same from dropping; this yoke being adjustable along the bar so as to allow the angle of set of the draw bar relative to the beams 1 and 2 to be altered at will to suit different condi- 70 a= constantdownwardfpressure 0n the plow 75 frame so as to prevent the plows from the f usualftendncyto'jump out of the ground in hard dirt. Aheadof the bar 27 the draw bar is pivotall'y connected to an extension 26a,

whiohextension, is .adj ustably connected tof a 30 iransverserbare29 jproj ecting llaterally from, 1 and-'bonnectedtothefswivel 4spindle 7 :of the .j wheel; 6:1 Ordinarily; ,therefore,` Ithe s draw bar and wheellwilllbe.maintainedfrigiddbut the; angle-of the ,t draw. har :may be easily 55 alteredas. aboxzestated; whilecth'e` angle :of setting,of. the wheel .6 relativeto .the lineeof Y draft may berliliewise` easily and independ ently alteredrbyshiftingethe point of .onnec-- tion'otlthebar 29 withithedrawibar... Since *9 the edrawabaninember .,to which' thebar 29.is connected-.is .swivelly mounted relative .tothe p low^frame,.it willbe evident ofcourse:that` i aslsaidedraw bar member .iskpulled laterally whenisteering the plow.7 therwheel, 6 `will -also 95 be turned so as to facilitatethe. steering; operatons.{ The `drawl bar normally extends im bisectingirelationtothe anglefbtweemthe Y beamssl andf2 and `in direct line Y.with the i' traetorholdQrthesame. Uneven strainseon.

thee-frames f1 and."2.,are therefore avoided and it as not .necessary .tovset the wheels 4 vand -6. at l the sangpleto4 the.. line `lof movement as is usually,necessaryl togoffsetJ the :sidewis'e vdragA of the draw bar. turnfreelyand: easily in. their` bearings and properlyyfollw. theirvepathjof "movement,V all sidthrustsrofitheplows being.,takenby ,the single wheel. 14 Whioliis mounted in a manner to. ywithstandtlfe thrusts; which. may be re- Y 11 ianges; iii-:the: usual construction are 4rigid 115 with the Vwheelslbut. in-rmyimproved structure e said angeseareffrmedseparately fromth'e wheelsand.: areprovidedl'withf radial inwardlyfprojecti'nglugs v 31 which .are bolted to the wheel webs;as ,shown,.r.sothat ythe flanges: 1.29

may be removedfwhen desiredfto ,enable .the plow f to e travelf over.. roads. .without v scoring the surface of the same. The lateraltilting ofA the .i wheel,` supporting; anni enables Y. the

wheel to be adjusted so that it may be main`A 125 tained iat asuitable operating angle to ythe ground regardlessof theslope. of the latter, as ..-on, .afiside h-ill,. and ,regardless 4of whether theeplowv'isloperatig in one ,direction or another along a hillf This feature malese-130 These wheels therefore my plow very suitable for side hill work,

avoiding the tendency to slip down hill which is so evident with ordinary plows. By reason of the point of main connection of the drawbar with the frame being adjacent the rear end of the latter, the drawbar toward its forward end may be connected to the crossbar 27 on the side thereof adjacent the longitudinal plane of the wheel 14. This enables the tractor to be maintained well to one side of the furrow being made, while at the same time the plow will not pull out of the ground as would be the case with the ordinary plow if the drawbar were connected to the structure in a corresponding lateral point.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described my invention what y I claim as new and useful and desire to secure by Letters Patent is:

l. In plow construction, a main wheel-supported frame, a drawbar pivoted at its rear end on the frame toward its rear end for swinging movement in a transverse horimain frame, a drawbar pivoted at its rear end on the frame intermediate the ends thereof and extending thence beyond the front end of the same, a cross-bar secured on the front end of the frame, the drawbar extending under and slidably engaging the crossbar, and means between the drawbar and cross-bar for holding the former against lateral movement relative to the cross-bar from a plurality of different positions in the length of said cross-bar.

3. A structure as in claim 2, in which said last named means comprises a yoke straddling the drawbar under the cross-bar and engaging the latter, with means for adjustably securing said yoke to the cross-bar.

4. In plow construction, a mainframe, said frame including forwardly diverging side beams, a draw-head disposed between the beams toward their rear ends and extending substantially parallel to onevbeam, a brace Y 

